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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 7,000 cps | Dough |
| Mix Ratio By Volume | N/A (gram scale required) | 1A:1B |
| Barcol 935 Hardness | 93 | — |
| Shore D Hardness | — | 60 |
| Specific Volume | 18.22 cu. in./lb. | 61.6 cu. in./lb. |
| Color | Black | Grey |
Disclaimer
Although we do our best to ensure accuracy, Smooth-On offers no warranties, promises, and/or representations of any kind, either expressed or implied, as to the accuracy, completeness, or reliability of the information contained on this Compare Tool, nor suitability of the information contained herein to your particular circumstances. Smooth-On assumes no liability for losses or damages of whatever nature (direct, indirect, consequential or other) associated with your use, or inability to use, the Compare Tool, or from your use (or failure to use) the information contained herein. Other useful tools include product technical bulletins and our extensive FAQ section. You can also contact our technical support team.All Technical Data
| EpoxAcast™ 650 BLACK + 102 Hardener | Free Form™ AIR FAST | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 7,000 cps | Dough |
| Mix Ratio By Volume | — | 1A:1B |
| Mix Ratio By Weight | 100A:13B | 1A:1B |
| Pot Life | 90 minutes | — |
| Cure Time | 4 hours | — |
| Barcol 935 Hardness | 93 | — |
| Shore D Hardness | — | 60 |
| Specific Gravity | 1.52 g/cc | 0.45 g/cc |
| Specific Volume | 18.22 cu. in./lb. | 61.6 cu. in./lb. |
| Color | Black | Grey |
| Tensile Modulus | 1,503,000 psi | — |
| Ultimate Tensile | 6,000 psi | — |
| Tensile Elongation | 0.42 % | — |
| Compressive Strength | 16,350 psi | — |
| Compressive Modulus | 142,600 psi | — |
| Flexural Strength | 5,890 psi | — |
| Flexural Modulus | 710,000 psi | — |
| Shrinkage | 0.001 in. / in. | — |
| Heat Deflection Temp | 129 °F | 145 °F |
| Buoyant Force | — | 10.4 lb/ft³ |
Product Description
EpoxAcast™ 650 BLACK + 102 Hardener
EpoxAcast™ 650 Black is a mineral filled general purpose casting epoxy that is low cost and versatile. It features a low mixed viscosity for minimal bubble entrapment.
Free Form™ AIR FAST
Free Form™ AIR FAST is an easy to use epoxy putty that cures in minutes to a hard, strong and extremely lightweight plastic. Parts A and B are dispensed in equal amounts by volume or weight and mixed by hand. Used at room temperature, working time is 6 minutes in a 60 gram mass (2 oz) and handling time is 30 minutes (tack-free, hard surface). Epoxy putty is easy to color with UVO™ color pigments. You can smooth, texture, sculpt, or stamp while epoxy putty is in its “green” state. Cured epoxy is lightweight enough to float in water and can be easily carved, sanded, tooled and painted for finishing. It is compatible with original Free Form™ AIR, Free Form™ AIR HT and Free Form™ AIR Fire Safe.